What type of system are you running?

[konc3pt]

I'm curious because when I play black ops mine runs terrible. I know it's mainly because of my pc but I was wondering if any of you techy's knew any setting tweaks or anything that may help me run better. Currently I play on my roommates rig. Nothing special. Dell machine with upgraded video card and power supply. My machine is currently down but It is no better. I'm going to build a new machine sometime hopefully soon. Anyway heres what i'm running now

With All graphics and game settings on the lowest settings
I don't think the graphics card is the problem on the lowest settings as much as I believe the processor is having a tough time with the load. I freeze for a few seconds constantly and i can hear the machine working its ass to the limit. Altho when I engage gun battles specially close range i get real choppy. Any suggestions would be appreciated.

Manufacturer:
Dell Inc.
Processor:
Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz (2 CPUs), ~2.3GHz
Memory: 3070MB RAM
Hard Drive: 489 GB
Video Card: NVIDIA GeForce 8800 GT
Monitor: Hanns.G HG281
Sound Card:
Speakers (Realtek High Definition Audio)
Speakers/Headphones: Plantronics Audio 355
Keyboard: Razer Lycosa
Mouse: Logitech g5 lazer
Mouse Surface: rocketfish
Operating System: Windows Vista™ Home Premium (6.0, Build 6002) Service Pack 2 (6002.vistasp2_gdr.100608-0458)